mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-01-26 03:02:27 -05:00
77 lines
2.7 KiB
C++
77 lines
2.7 KiB
C++
/*
|
|
* Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <LibJS/Runtime/AbstractOperations.h>
|
|
#include <LibJS/Runtime/Error.h>
|
|
#include <LibJS/Runtime/GlobalObject.h>
|
|
#include <LibJS/Runtime/Iterator.h>
|
|
#include <LibJS/Runtime/WeakSet.h>
|
|
#include <LibJS/Runtime/WeakSetConstructor.h>
|
|
|
|
namespace JS {
|
|
|
|
WeakSetConstructor::WeakSetConstructor(Realm& realm)
|
|
: NativeFunction(realm.vm().names.WeakSet.as_string(), realm.intrinsics().function_prototype())
|
|
{
|
|
}
|
|
|
|
void WeakSetConstructor::initialize(Realm& realm)
|
|
{
|
|
auto& vm = this->vm();
|
|
Base::initialize(realm);
|
|
|
|
// 24.4.2.1 WeakSet.prototype, https://tc39.es/ecma262/#sec-weakset.prototype
|
|
define_direct_property(vm.names.prototype, realm.intrinsics().weak_set_prototype(), 0);
|
|
|
|
define_direct_property(vm.names.length, Value(0), Attribute::Configurable);
|
|
}
|
|
|
|
// 24.4.1.1 WeakSet ( [ iterable ] ), https://tc39.es/ecma262/#sec-weakset-iterable
|
|
ThrowCompletionOr<Value> WeakSetConstructor::call()
|
|
{
|
|
auto& vm = this->vm();
|
|
|
|
// 1. If NewTarget is undefined, throw a TypeError exception.
|
|
return vm.throw_completion<TypeError>(ErrorType::ConstructorWithoutNew, vm.names.WeakSet);
|
|
}
|
|
|
|
// 24.4.1.1 WeakSet ( [ iterable ] ), https://tc39.es/ecma262/#sec-weakset-iterable
|
|
ThrowCompletionOr<NonnullGCPtr<Object>> WeakSetConstructor::construct(FunctionObject& new_target)
|
|
{
|
|
auto& vm = this->vm();
|
|
auto iterable = vm.argument(0);
|
|
|
|
// 2. Let set be ? OrdinaryCreateFromConstructor(NewTarget, "%WeakSet.prototype%", « [[WeakSetData]] »).
|
|
// 3. Set set.[[WeakSetData]] to a new empty List.
|
|
auto set = TRY(ordinary_create_from_constructor<WeakSet>(vm, new_target, &Intrinsics::weak_set_prototype));
|
|
|
|
// 4. If iterable is either undefined or null, return set.
|
|
if (iterable.is_nullish())
|
|
return set;
|
|
|
|
// 5. Let adder be ? Get(set, "add").
|
|
auto adder = TRY(set->get(vm.names.add));
|
|
|
|
// 6. If IsCallable(adder) is false, throw a TypeError exception.
|
|
if (!adder.is_function())
|
|
return vm.throw_completion<TypeError>(ErrorType::NotAFunction, "'add' property of WeakSet");
|
|
|
|
// 7. Let iteratorRecord be ? GetIterator(iterable, sync).
|
|
// 8. Repeat,
|
|
// a. Let next be ? IteratorStep(iteratorRecord).
|
|
// c. Let nextValue be ? IteratorValue(next).
|
|
(void)TRY(get_iterator_values(vm, iterable, [&](Value next_value) -> Optional<Completion> {
|
|
// d. Let status be Completion(Call(adder, set, « nextValue »)).
|
|
// e. IfAbruptCloseIterator(status, iteratorRecord).
|
|
TRY(JS::call(vm, adder.as_function(), set, next_value));
|
|
return {};
|
|
}));
|
|
|
|
// b. If next is false, return set.
|
|
return set;
|
|
}
|
|
|
|
}
|